Improvement in rudder-chucks for vessels



O. M. TARR. Rudder-Chocks for Vessels. N0.196,602

Patented Oct. 30, I877.

INVENTD M in, 254

. W'IT NEEEEE.

N. PETERS, PHTO LITNOGRAPNER. WASHINGTON, I} C UNITED STATES.

PATENT OEEIoE.

CHARLES M. TARR, OF GLOUCESTER, MASSACHUSETTS, ASSIGNOR TO A. VOSS, OFSAME PLACE.

IMPROVEMENT IN RUDDER-CHUCKS FOR VESSELS.

Specification forming. part of Letters Patent No. 196,602, dated October30, 1877; application filed September 15, 1877.

To all whom it may concern:

Be it known that I, CHARLEs M. TARR, of Gloucester, in the county ofEssex and State of Massachusetts, have invented certain new and usefulImprovements in Rudder-Chucks; and I do hereby declare the following tobe a full, clear, and exact description of the invention, such as. willenable others skilled in the art to which it pertains to make and useit, reference being had to the accompanying drawings, which form part ofthis specification.

My invention relates to an improvement in devices for holding therudders of boats and vessels still while lying at anchor; and itconsists in a suitable clamping device, which is applied to the upperend of the rudder, so as to hold it so tightly that the rudder cannot bemade to work back and forth by the action of the waves against it, aswill be more fully described hereinafter.

The accompanying drawings represent my invention. A

a represents the hull of a boat or vessel of any kind, and b the rudder.Upon the top of the boat, where the rudder-stem passes through, isplaced a frame-work, c, which incloses the top of the stem like a box.In this box are placed the two bearings-d, in which is journaled theeccentric shaft 0, which shaft has alever, f, upon its outer end, foroperating it, and the ratchet g, in which the pawl h catches, so as tohold the shaft in any desired posltion.

Passed over or secured to the eccentric shaft 6, in any suitable manner,are the two clamps i, which have their rear ends connected together by aset-screw, so as to adjust them to any desired size of stem that may beused. Passing up through the space between these two clamps is therudder-stem.

The operation of my device is as follows: When the eccentric shaft isturned in such a position as to move the clamps backward, the rudder isfree to move back and forth in any direction that the one steering maychoose, and without the slightest obstruction from the clamps.

As soon as the boat is brought to anchor, in order to prevent the wavesfrom constantly working the rudder back and forth, and wearing out itsbearings and getting out of order, the eccentric is moved forward, so asto bring the clamps tightly against the rudder, and thus hold it sorigidly in position that no ordinary force or power can move it. As soonas the boat is. about to be used again, the clamps are moved back out ofthe way, when the rudder will move as freely as ever.

Having thus described my invention, what I claim is The combination ofthe eccentric shaft 0, clamps c', rudder-stem, pawl and ratchet, and aninclosing-case, substantially as described.

In testimony that I claim the foregoing I have hereunto set my hand this30th day of August, 1877.

CHARLES M. TABR. Witnesses:

OYRUs SToRY, ADOLPH Voss.

